»… the wrong shape …«

»It’s very beautiful,« said the priest in a low, dreaming voice; »the colours are very beautiful. But it’s the wrong shape.«
»What for?« asked Flambeau, staring.
»For anything. It’s the wrong shape in the abstract […] The colours are intoxicatingly lovely; but the shapes are mean and bad—deliberately mean and bad.«

(G. K. Chesterton, The Wrong Shape; in: The Complete »Father Brown«, Vol. 1: The Innocence of Father Brown, London 1911).